"You're already on the latest version"

I want to upgrade to premium and I am logged into my Volumio account on my device. However, when I check for updates in the web app, it says I’m on the latest version. However, if I click on upgrade, it still shows the old subscription tiers (virtuoso, superstar…).
How come it still has these options if I am using the latest version? How can I upgrade?

Thanks.

The update option in System settings is to update the software version. If it says you’re on the latest version, that’s good. You need to go to the Volumio account settings (My Volumio) to upgrade your account.